InChI=1S/C15H20O9S/c1-7-4-10-12(8(2)13(17)22-10)9(16)5-14(3)11(23-25(19,20)21)6-15(7,18)24-14/h4,9-12,16,18H,2,5-6H2,1,3H3,(H,19,20,21)/b7-4-/t9?,10?,11?,12?,14-,15-/m1/s1